Two objects, A and B, with masses of 3.4 kg and 1.6 kg, move on a frictionless horizontal surface. Object A moves to the right at a constant speed of 5.2 m/s
while object B moves to the right at a constant speed of 1.8 m/s. They collide and
stick together (a perfectly inelastic collision). a. Determine the total momentum
of the system (both objects) before the collision b. Find the speed of the two
objects after the collision c. Are the momentum and kinetic energy of the system
(the 2 toy cars) conserved? Explain. Show the steps on how you arrived at your
final answer.

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?